I had trouble in getting anything to appear on http://www.mysite.com/w-admin/
when i was trying to setup a wp installation. I had a white screen of death (evil)
The solution was not DB related as typically suggested, it was the fact that filezilla had failed/skipped to upload about 10 files (into various directories) during the upload of WP.
Once I Checked all files and Dirs and uploaded the missing files it was a smooth installation. Never had experienced this issue with filezilla before ;-/
Hopefully this is of some use to those that experience this problem of a WSOD